Might not be the "best" but I work for a performance company and get mad discounts on certain brands we carry. I can pick up Megan Racing exhaust for the M3 for $429 and from the video clips I've heard it sounds pretty decent. I wish I knew what exhaust was on my old M3, it was aftermarket but I never looked hard to figure out what the brand was. My current M3 is stock, but just not sure I want to spend $3000+ on exhaust at the moment.

No Offense but that exhaust is garbage. I feel you on not wanting to spend a bunch of money so your best bet would be to find a quality used exhaust or do the OEM Exhaust Mod which really does sound great and retains stock look. And for power, it's very hard to squeeze more power out of the S65 engine. Even with Full exhaust and full bolt on mods you're only looking at around a realistic 30-40hp upgrade and thats with spending $4000+. So unless you're looking at a supercharger you're not gonna get much more HP with anything else.

No Offense but that exhaust is garbage. I feel you on not wanting to spend a bunch of money so your best bet would be to find a quality used exhaust or do the OEM Exhaust Mod which really does sound great and retains stock look. And for power, it's very hard to squeeze more power out of the S65 engine. Even with Full exhaust and full bolt on mods you're only looking at around a realistic 30-40hp upgrade and thats with spending $4000+. So unless you're looking at a supercharger you're not gonna get much more HP with anything else.

No Offense but that exhaust is garbage. I feel you on not wanting to spend a bunch of money so your best bet would be to find a quality used exhaust or do the OEM Exhaust Mod which really does sound great and retains stock look. And for power, it's very hard to squeeze more power out of the S65 engine. Even with Full exhaust and full bolt on mods you're only looking at around a realistic 30-40hp upgrade and thats with spending $4000+. So unless you're looking at a supercharger you're not gonna get much more HP with anything else.

Curious as to why you think it's garbage? Friend of mine picked a used one up for $250 and we threw it on a couple weeks ago. He loves it, the sound is great, and it has hardly any drone. Seems like a good value to me.

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